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Materials & Usage
Lead is a material that has been used on roofs for centuries, offering durable, weatherproof properties for your home. Typically, lead was formed into lead sheeting and covered the joists of buildings. It also offered a flexible way to cover joins and difficult structures on the roof.
Today, you will see lead flashing used in modern homes, exploiting the flexibility and durability of the material , but lead is more prominently used in larger deposits on older properties due to its long economical lifespan. It is a malleable material that will not crack easily as it contracts in cold climates and experiences further expansion in hot climates.
History Of Lead
Today, roofers must follow strict rules when handling roofing lead, as it is as toxic now as it was in antiquity. As far back as the 2nd Century BC, biologists and physicians noted the toxicity of lead. Up until the 1950’s lead piping was used in buildings, and it was only finally banned in 1969. The toxic effect of lead is cumulative, and only affects those who handle it every day, which is why roofers follow strict guidelines in its use. It should be noted that lead is not toxic to homeowners when used on their roof, and it remains the most efficient and effective way to waterproof joints in roof construction.